Long term studies in the USA and Scandinavia have shown that 90% of root-canal treated teeth have a very good chance of remaining healthy – assuming appropriate and regular medical care including dental restoration if required.
The tooth’s root-canal system is comparable to the roots of a tree and is composed of a set of branches, some of which no larger than a human hair. Traditional endodontic practice only treats the main branches within the root-canal system. Endodontic specialists, however, attempt to go much further. The techniques developed and taught by Dr. Herbert Schilder at Boston University (USA) are designed to free the entire root-canal system, in all its complexity, from bacteria and from diseased or dead tissue. This involves cleaning and preparing the root-canals using ultra-fine flexible files, which are then filled and sealed with gutta-percha (a form of natural rubber). This technique is extremely difficult and time-consuming, and is therefore more costly. The quality of this treatment however contributes to its long-term success. A dentist who has referred a patient for endodontic treatment can then work on reconstructing the exterior of the tooth using whatever means appropriate (e.g., a crown).
100% cleaning with complete filling and sealing = 100% success
Endodontic dental treatment, no matter how complicated, involves, using a high-resolution dental microscope. This enables 90% success rates with even the most complicated procedures e.g., a root tip re-sectioning. Endodontist are also taught to diagnose sources of jaw and facial pain as well as treat accidental injuries to teeth and their surrounding tissue (see dental trauma).